Pour the vodka in a large jug, add the horseradish and peppercorns and shake it up. Let it sit for 10-12 hours, but give it a shake every couple of hours. When it's done, strain it through a coffee filter and pour it back in the bottle. Don't worry about the color... that just means it's absorbed all that horseradish and pepper.

Pour it all in a jug and shake it. Refrigerate for several hours until it's good and cold.

The Drink

Fill a glass with ice. Give the mixer a good shake. Add the spicy vodka and mixer to the glass according to your tastes -- 1 part vodka to 3 parts mixer works well. Stir and garnish with a celery stick or wedge of lime.